The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 1998
Filed:
Feb. 25, 1997
Gary A Dreyer, Torrance, CA (US);
Alan L Kovacs, Long Beach, CA (US);
Kenneth G Maish, Tucson, AZ (US);
Raytheon Company, Los Angeles, CA (US);
Abstract
A hermetically sealed microelectronic package that uses a thermal barrier or interposer between a cover and an aluminum nitride substrate. A solder interface is disposed on an aluminum nitride substrate, and the thermal barrier is disposed on the solder interface. The cover is attached to the solder interface using a solder seal that solders the cover to the interposer to produce a hermetically sealed package. The thermal barrier or interposer permits low cost, low temperature soldering of metal covers to metallized aluminum nitride substrate and is compatible with volume production processing.